摘要
以官地矿403工作面回采巷道为工程背景,介绍了急倾斜煤层巷道的维护特点,分析了该巷道的支护难题。根据该煤层围岩赋存特点及变形破坏特征,采用了锚梁网联合支护技术。运用松动圈组合拱支护理论得出了锚杆支护的基本参数。现场工业性试验获得成功,取得了良好的经济社会效益。
Based on the # 403 face entry of Guandi coal mine, the characters of steeply inclined coal seam entry maintenance is introduced. The tough problem of support in such entry is also analyzed. In this entry, bolt--beam--mesh combined support is used in line with the characters of the coal seam surrounding rock and its deformation characters. With the theory of slack-- loose circle composite arch support, basic support parameter for bolting support are deduced. On --the--site industry--sized experiments turn out to be a success, producing obvious economic and social benefits.
出处
《中国煤炭》
北大核心
2009年第12期51-54,共4页
China Coal
关键词
急倾斜煤层
锚梁网支护
巷道支护
矿压观测
steeply inclined coal seam
bolt-beam-mesh
entry support
mine pressure observation
